CN212478277U - Steel form shell concrete combination L shape internode - Google Patents

Abstract

The application relates to a steel form concrete combined L-shaped section intermediate column, which relates to the technical field of combined walls in constructional engineering and comprises a first column body, a second column body, a partition structure and a base; the outer contour of the cross section of the first column body is rectangular, a first cavity is arranged in the first column body, and a first pouring opening communicated with the first cavity is formed in the upper part of the first column body; the outer contour of the cross section of the second column body is rectangular, a second chamber is arranged in the second column body, a second pouring opening communicated with the second chamber is arranged at the upper part of the second column body, the second column body is positioned on one side of the first column body and is vertically and fixedly arranged with the first column body, and an integral structure with an L-shaped cross section is formed; the partition structure is located between the first cylinder and the second cylinder and used for isolating the first cavity and the second cavity, and the base is located at the bottom of the first cylinder and the bottom of the second cylinder and fixedly connected with the first cylinder and the second cylinder. The technical problem that the template is wasted time and energy when the site supporting that exists among the prior art can be solved in this application, reach the effect that the on-the-spot preparation wall body is more convenient, improve work efficiency.

Description

Steel form shell concrete combination L shape internode

Technical Field

The application relates to the technical field of combined wall bodies in constructional engineering, in particular to a steel form concrete combined L-shaped internode column.

Background

With the development of modern industrial technology, the assembly and combination type construction technology of house buildings is developed rapidly, and the assembly and combination type wall bodies are manufactured in a separated mode and then connected and fixed. The manufacturing technology of the assembled combined wall body enables the manufacturing of the wall body to be more convenient.

The steel form concrete structure is a combined structure of steel and concrete formed by using a steel structural member as a template and pouring concrete inside. Compared with the traditional concrete building, the steel form shell concrete composite structure can realize factory production, integrated improvement, standardization and digital modeling, steel form shell beam and column structures are common structures in the steel form shell concrete composite structure and serve as important supporting members of the building, and the cost and the safety performance of the building are directly influenced by the performance of the steel form shell concrete composite structure.

At present, a steel shell concrete structure is generally manufactured by prefabricating a main wall body in a factory, then conveying the prefabricated main wall body to a construction site for assembly, and additionally supporting a template on the site for pouring at a corner part connected with the main wall body. In the preparation of above-mentioned steel form shell concrete structure, the construction at the corner position of wall body adopts on-the-spot formwork, because the corner position generally is the right angle, adopts on-the-spot formwork to pour, can't guarantee the quality at corner position on the one hand, and on the other hand wastes time and energy, and efficiency is lower.

Aiming at the related technologies, the inventor thinks that the field formwork erection is used for pouring corner parts, the formwork erection and formwork removal procedures are complicated, and the quality is poor and the working efficiency is low.

SUMMERY OF THE UTILITY MODEL

In order to improve the technical problem that the corner position of current steel form concrete structure props up the form removal process loaded down with trivial details, inefficiency, this application provides a steel form concrete combination L shape festival intercolumn.

The application provides a steel form concrete combination L shape internode post adopts following technical scheme:

a steel form concrete combined L-shaped internode comprises

The cross section of the first column body is rectangular in outline, a first cavity is arranged in the first column body, and a first pouring opening communicated with the first cavity is formed in the upper part of the first column body;

the cross section of the second column body is rectangular in outline, a second chamber is arranged in the second column body, a second pouring opening communicated with the second chamber is arranged at the upper part of the second column body, and the second column body is positioned on one side of the first column body and is vertically and fixedly arranged with the first column body to form an integral structure with an L-shaped cross section;

a partition structure between the first cylinder and the second cylinder for isolating the first chamber from the second chamber, an

The base is located the first cylinder with the bottom of second cylinder and with first cylinder with second cylinder fixed connection.

Through adopting above-mentioned technical scheme for the wall body modularization, especially the great corner position of the construction degree of difficulty, the first cylinder and the second cylinder of perpendicular fixed connection have been adopted, through pouring concrete to its inside, can form firm, pleasing to the eye wall body corner internode post, the mode of pouring of traditional supporting template has been replaced, need not to build and demolish the template, the process has been simplified, and staff's intensity of labour has been reduced, make the job site cleaner and tidier, the security of field operation has been improved, in addition, the wall body outside is more pleasing to the eye.

Preferably, the partition structure comprises a partition plate; the baffle is fixedly arranged at a 45-degree cut position where the first column body and the second column body are in butt joint.

Through adopting above-mentioned technical scheme, the position design that first cylinder and second cylinder are connected is 45 incisions, welds the group to right, and at the incision position that first cylinder and second cylinder are right, along the vertical baffle that sets up of incision, separates first cavity and second cavity through the baffle, simple structure, and be favorable to improving the structural strength of first cylinder and second cylinder.

Preferably, the partition structure comprises two partition plates arranged at the connecting part of the first cylinder and the second cylinder, the two partition plates are perpendicular to each other, and the partition plates and the side walls of the first cylinder and the second cylinder at right-angle positions are enclosed to form a third chamber.

By adopting the technical scheme, three independent spaces are formed in the internode column and are respectively the first chamber, the second chamber and the third chamber, concrete can be poured into the internode column through the three chambers, and the operation is more flexible; in addition, the design of two mutually perpendicular baffles is favorable to strengthening the structural strength of the first cylinder and the second cylinder, so that the whole structure is firmer and more reliable.

Preferably, annular rib plates are respectively and fixedly arranged inside the first column body and the second column body along the circumferential direction of the inner wall.

Through adopting above-mentioned technical scheme, the structural strength of first cylinder of mainly used reinforcing and second cylinder is in the design of annular floor to be favorable to making more firm reliable that concrete and first cylinder and second cylinder are connected.

Preferably, the plate surface of the partition plate is provided with a communicating hole.

Through adopting above-mentioned technical scheme, the intercommunicating pore is used for when pouring, makes the concrete can flow between first cavity, second cavity or between first cavity, second cavity and third cavity, is favorable to pouring the equilibrium of in-process atress.

Preferably, the first column body and the second column body are both columnar shells; the shell is made of a steel plate.

Through adopting above-mentioned technical scheme, make the structure of internode post simplify more, the preparation of column casing is convenient, swift, adopts the steel sheet to assemble the welding, and is firm reliable, and the outside is more pleasing to the eye.

Preferably, the base is a plate body with a first positioning groove on the upper surface, the first positioning groove is annular and is provided with a groove with the cross section outline of the first column body and the cross section outline of the second column body consistent, and the lower end of the first column body and the lower end of the second column body are spliced and fixed in the first positioning groove.

By adopting the technical scheme, the base connects the bottoms of the first cylinder and the second cylinder together, the stability of the structure is enhanced, the base adopts a plane plate body, the weight of the whole structure can be reduced, the first positioning groove is formed in the upper surface of the plate body, so that the first cylinder, the second cylinder and the base are more convenient to connect and more accurate to position, and the base is welded and fixed with the first cylinder and the second cylinder; the base can carry out fine support to the bottom of first cylinder and second cylinder to can reduce the concrete when pouring and be excessive, guarantee the bottom outward appearance of corner joint intercolumn.

Preferably, the upper parts of the first column body and the second column body are fixedly provided with cover plates, and the first pouring opening and the second pouring opening are respectively positioned on the cover plates.

Through adopting above-mentioned technical scheme, the design of apron makes the upper portion of first cylinder and second cylinder link together on the one hand, plays reinforced effect, and the stability of reinforcing structure, on the other hand can conveniently be connected with the standard festival on upper portion to can reduce the excessive of concrete when pouring.

Preferably, the lower surface of apron is equipped with the second constant head tank, the second constant head tank be the annular and with first cylinder with the unanimous recess of the cross section outline of second cylinder, first cylinder with the upper end grafting of second cylinder is fixed in the second constant head tank.

Through adopting above-mentioned technical scheme, the design of second constant head tank makes apron and first cylinder with the group of second cylinder is more convenient to the installation, and the location is more accurate, is favorable to improving the efficiency of installation.

Preferably, a plurality of rod bodies and/or conical bulges which are vertically fixed with the surface of the inner wall are arranged on the inner walls of the first column body and the second column body.

By adopting the technical scheme, the rod body and/or the conical bulges are favorable for enhancing the connecting force between the concrete and the standard section and the internode column, and the strength of the corner internode column after the concrete is poured is favorably enhanced.

In conclusion, the technical problems that the existing formwork erecting and disassembling processes of the corner part of the steel form shell concrete structure are complicated and low in efficiency are solved, the consistent wall forming is achieved, the site formwork erecting and disassembling are not needed, the labor intensity of workers on the construction site is reduced, and the working efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of an L-shaped joint stud of a steel form concrete combination provided in an embodiment of the present application;

fig. 2 is a schematic structural view of an L-shaped joint stud of a steel form concrete combination according to another embodiment of the present application;

FIG. 3 is a schematic structural diagram of a separator in an embodiment of the present application;

FIG. 4 is a schematic structural view of the first column and the second column of FIG. 1 after being connected with the cover plate;

FIG. 5 is a schematic structural diagram of the base in FIG. 1;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

FIG. 7 is a schematic structural diagram of the cover plate in FIG. 4;

FIG. 8 is a rear view of FIG. 7;

fig. 9 is a schematic structural diagram of connection between an L-shaped section intermediate column and a standard section of a steel form concrete combination according to an embodiment of the present application.

In the figure: 1. a first column; 101. a first chamber; 2. a second cylinder; 201. a second chamber; 3. a partition structure; 301. a communicating hole; 302. a bump; 4. a first pouring opening; 5. a second pouring opening; 6. a cover plate; 601. an exhaust hole; 602. a third positioning groove; 603. a second positioning groove; 7. a base; 701. a first positioning groove; 8. an annular rib plate; 9. a rod body; 10. a conical projection; 11. a third chamber; 12. and (5) standard section.

Detailed Description

The present application is described in further detail below with reference to figures 1-9.

Referring to fig. 1, the steel form concrete combined L-shaped internode column disclosed in the embodiment of the present application includes a first column body 1, a second column body 2, a partition structure 3 and a base 7; the first column body 1 and the second column body 2 are both columnar shells; the shell is made of a steel plate; the outer contour of the cross section of the first column body 1 is rectangular, a first cavity 101 is arranged in the first column body, and a first pouring opening 4 communicated with the first cavity 101 is formed in the upper part of the first column body; the outer contour of the cross section of the second column body 2 is rectangular, a second chamber 201 is arranged in the second column body, a second pouring opening 5 communicated with the second chamber 201 is arranged at the upper part of the second column body 2, the second column body 2 is positioned on one side of the first column body 1 and is vertically and fixedly arranged with the first column body 1, and an integral structure with an L-shaped cross section is formed; the partition structure 3 is positioned between the first cylinder 1 and the second cylinder 2 and is used for separating the first chamber 101 from the second chamber 201; the base 7 is positioned at the bottoms of the first cylinder 1 and the second cylinder 2 and is welded and fixed with the first cylinder 1 and the second cylinder 2; the height of the first cylinder 1 and the second cylinder 2 is 800mm-1500 mm.

The application of preparation, the use of steel form shell concrete combination L shape internode is:

firstly, prefabricating a first cylinder 1 and a second cylinder 2, and respectively manufacturing plate bodies on the side surfaces of the first cylinder 1 and the second cylinder 2 by adopting steel plates; then prefabricating and installing the partition structure 3; then, the first cylinder 1 and the second cylinder 2 are assembled, and the parts of the first cylinder 1 and the second cylinder 2 which are assembled and connected are welded and fixed; then, the first column body 1, the second column body 2 and a base 7 at the bottom are assembled and welded, the L-shaped internode column can be prefabricated in a factory, the L-shaped internode column is assembled with the standard joint 12, and then is assembled with a main wall shell, a cross beam shell and the like, and then is conveyed to a construction site;

finally, pour into the concrete into in L shape festival pillar and the standard festival 12, simultaneously, main wall body shell, crossbeam casing etc. together fill the concrete for whole wall structure can once pour and accomplish, and need not to build and demolish the template, has simplified the process, makes the wall body preparation more convenient, has improved work efficiency, and outside steel sheet has reinforced (rfd) effect, makes the wall body more firm durable, and the outward appearance is more pleasing to the eye simultaneously.

The utility model provides a steel form shell concrete combination L shape internode's beneficial effect does: above-mentioned design of corner internode post for the wall body modularization, especially the great corner position of the construction degree of difficulty, the first cylinder 1 and the second cylinder 2 of perpendicular fixed connection have been adopted, through pouring concrete to its inside, can form firm, pleasing to the eye wall body L shape internode post, traditional mode of strutting the template and pouring has been replaced, need not to build and demolish the template, the process has been simplified, and staff's intensity of labour has been reduced, make the job site cleaner and tidier, the security of site operation has been improved, in addition, the wall body outside is more pleasing to the eye.

Referring to fig. 1, as a specific embodiment of the steel form concrete combined L-shaped intersegment column provided by the present application, the partition structure 3 includes two partition plates disposed at a connection portion of the first column body 1 and the second column body 2, the two partition plates are perpendicular to each other, and the two partition plates and the side walls of the first column body 1 and the second column body 2 at right angles enclose a third chamber 11.

Due to the design of the two vertical partition plates, three independent spaces are formed in the intersegmental column, namely the first chamber 101, the second chamber 201 and the third chamber 11, concrete can be poured into the intersegmental column through the three chambers, and the operation is more flexible; in addition, the design of two mutually perpendicular baffles is favorable to strengthening the structural strength of the first column 1 and the second column 2, so that the whole structure is firmer and more reliable.

Referring to fig. 2, as a specific embodiment of the steel form concrete combined L-shaped intersegment column provided in the present application, the partition structure 3 includes a partition plate; the baffle is fixedly arranged at the 45-degree cut position where the first column body 1 and the second column body 2 are butted. Specifically, a first notch is formed in the side edge of one side of the first column body 1 in the width direction, the angle of the first notch is 45 degrees, a second notch is formed in the side edge of one side of the second column body 2 in the width direction, and the angle of the second notch is 45 degrees; wherein, first cylinder 1 and second cylinder 2 are to fixed connection through first incision and second incision group, and the group is to the position through welded fastening, and the baffle setting is in the position that first incision and second incision are right, keeps apart first cavity 101 and second cavity 201 through the baffle, and the baffle adopts the preparation of straight board in plane, baffle and first cylinder 1 and second cylinder 2 welded fastening.

The position design that above-mentioned first cylinder 1 and second cylinder 2 are connected is 45 incisions, welds the group to right, and at the incision position that first cylinder 1 and second cylinder 2 are right, along the vertical baffle that sets up of incision, separates first cavity 101 and second cavity 201 through the baffle, and simple structure just is favorable to improving the structural strength of first cylinder 1 and second cylinder 2.

Referring to fig. 3, in an embodiment of the steel form concrete composite L-shaped inter-section column provided by the present application, a plate surface of the partition plate is provided with a communication hole 301.

The design of the communication hole 301 is mainly used for enabling concrete to circulate between the first chamber 101 and the second chamber 201 or between the first chamber 101 and the third chamber 11 and the second chamber 201 in the process of pouring concrete, the pouring process is integrated, and the stress in the pouring process is more balanced.

Further, as shown in fig. 3, a plurality of bumps 302 are uniformly arranged on the two side surfaces of the partition board at intervals, and the bumps 302 are conical and cylindrical.

The design of the convex block 302 is beneficial to increasing the surface roughness of the partition plate, enhancing the reliability of the connection between the concrete and the surface of the partition plate and reducing the probability of generating gaps between the partition plate and the concrete.

Referring to fig. 1 and 2, as a specific embodiment of the steel form concrete combined L-shaped intersegment column provided by the present application, annular rib plates 8 are respectively and fixedly disposed inside the first column body 1 and the second column body 2 along the circumferential direction of the inner wall, the annular rib plates 8 are plate-shaped structures, the plate surfaces of the annular rib plates are vertically fixed to the side walls of the first column body 1 and the second column body 2, and the annular rib plates 8 are located in the middle of the first column body 1 and the second column body 2 along the height direction.

Above-mentioned annular ribbed plate 8's design, mainly used strengthens the structural strength of first cylinder 1 and second cylinder 2 to be favorable to making more firm reliable that concrete and first cylinder 1 and second cylinder 2 are connected.

Referring to fig. 4-6, in an embodiment of the steel form concrete composite L-shaped section intermediate column provided by the present application, the base 7 is a plate body having a first positioning groove 701 on an upper surface thereof, the first positioning groove 701 is an annular groove having a cross-sectional outer contour identical to that of the first column body 1 and the second column body 2, and lower ends of the first column body 1 and the second column body 2 are inserted and fixed in the first positioning groove 701.

The base 7 connects the bottoms of the first cylinder 1 and the second cylinder 2 together, the stability of the structure is enhanced, the base 7 is a planar plate body, the weight of the whole structure can be reduced, the first positioning groove 701 is formed in the upper surface of the plate body, so that the first cylinder 1, the second cylinder 2 and the base 7 are connected more conveniently and more accurately in positioning, and the base 7 is welded and fixed with the first cylinder 1 and the second cylinder 2; the base 7 can carry out fine support to the bottom of first cylinder 1 and second cylinder 2 to can reduce the concrete when pouring and be excessive, guarantee the bottom outward appearance of post between the festival.

Referring to fig. 4, as a specific embodiment of the steel form concrete combined L-shaped intersegment column provided by the present application, a cover plate 6 is fixedly disposed on the upper portions of the first column body 1 and the second column body 2, and the first pouring opening 4 and the second pouring opening 5 are respectively located on the cover plate 6.

Above-mentioned apron 6's design, the upper portion that makes first cylinder 1 and second cylinder 2 on the one hand links together, plays reinforced effect, and the stability of reinforcing structure, on the other hand can conveniently be connected with standard festival 12 on upper portion to can reduce the excessive of concrete when pouring.

Referring to fig. 4, as a specific embodiment of the steel form concrete combined L-shaped section stud provided in the present application, an exhaust hole 601 is formed on the cover plate 6; the vent hole 601 is located at a top corner portion of the edge of the cover plate 6, and the vent hole 601 allows the first chamber 101 or the second chamber 201 to communicate with the outside.

Above-mentioned exhaust hole 601's design can be at the in-process of concreting, and the interior air of post between the section in time discharges reduces the production of bubble, guarantees the closely knit degree of concrete.

Referring to fig. 7, as a specific embodiment of the steel form concrete combined L-shaped intersegment column provided by the present application, a second positioning groove 603 is formed in a lower surface of the cover plate 6, the second positioning groove 603 is an annular groove consistent with cross-sectional profiles of the first column 1 and the second column 2, and upper ends of the first column 1 and the second column 2 are inserted and fixed in the second positioning groove 603.

Above-mentioned second constant head tank 603's design for the apron 6 is more convenient with the group of first cylinder 1 and second cylinder 2 to the installation, and the location is more accurate, is favorable to improving the efficiency of installation.

Referring to fig. 8, as a specific embodiment of the steel form concrete combined L-shaped section stud provided in the present application, a third positioning groove 602 is formed in the upper surface of the cover plate 6, and the third positioning groove 602 is an annular groove.

The design of the third positioning groove 602 is mainly used for connecting the standard knot 12 on the upper part, so that the bottom of the standard knot 12 is inserted into the third positioning groove 602, the cross section size of the internode column is consistent with that of the standard knot 12, and the standard knot 12 and the internode column are accurately butted up and down by arranging the second positioning groove 603 and the third positioning groove 602 which correspond up and down, so that the dislocation error is reduced, and the whole outside is neat and consistent.

Referring to fig. 1 and 2, as a specific embodiment of the steel form concrete combined L-shaped inter-nodal column provided by the present application, a plurality of rod bodies 9 and/or conical protrusions 10 fixed perpendicular to the inner wall surface are disposed on the inner walls of the first column body 1 and the second column body 2, and the rod bodies 9 and/or the conical protrusions 10 are beneficial to enhancing the connecting force between concrete and the inter-nodal column and enhancing the strength of the corner inter-nodal column after concrete is poured; in addition, the inner surfaces of the first cylinder 1 and the second cylinder 2 can be roughened, so that the surface roughness is increased, the reliability of connection between concrete and the inner wall of the cylinder is improved, and the probability of gap generation is reduced.

In addition, the present application further provides a corner connecting column for a concrete composite wall, please refer to fig. 9, which includes any one of the above-mentioned steel form concrete composite L-shaped internode columns and a standard knot 12 arranged on the upper part of the internode column, wherein the lower part of the standard knot 12 is inserted into a third positioning groove 602 on the upper surface of the cover plate 6 and is welded and fixed; the standard knot 12 comprises a third column and a fourth column vertically and fixedly connected with one side of the third column; a third chamber is arranged inside the third column body, and a fourth chamber is arranged inside the fourth column body; wherein, the third chamber is communicated with the first chamber, and the fourth chamber is communicated with the second chamber.

When the corner connecting column is used, concrete liquid materials are poured into the third pouring opening and the fourth pouring opening respectively, the concrete liquid materials firstly enter the third cavity and the fourth cavity, then enter the first cavity 101 and the second cavity 201 through the first pouring opening 4 and the second pouring opening 5, the concrete liquid materials are firstly filled in the first column body 1 and the second column body 2, then the third column body and the fourth column body are filled, and finally the standard joint 12 and the internode column are integrated into a whole.

Above-mentioned corner spliced pole makes the wall body modularization, especially the great corner position of the construction degree of difficulty, through carrying out the group from top to bottom with standard festival 12 and internode post fixed, through pouring concrete to its inside, can form firm, pleasing to the eye wall body corner spliced pole, the mode of pouring of traditional supporting template has been replaced, need not to build and demolish the template, the process has been simplified, and staff's intensity of labour has been reduced, it is cleaner and tidier to make the job site, the security of site operation has been improved, in addition, the wall body outside is more pleasing to the eye.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides a steel form shell concrete combination L shape internode post which characterized in that: comprises that

The cross section of the first column body (1) is rectangular in outline, a first chamber (101) is arranged in the first column body, and a first pouring opening (4) communicated with the first chamber (101) is formed in the upper part of the first column body;

the cross section of the second column body (2) is rectangular in outline, a second chamber (201) is arranged in the second column body, a second pouring opening (5) communicated with the second chamber (201) is formed in the upper portion of the second column body, the second column body (2) is located on one side of the first column body (1) and is vertically and fixedly arranged with the first column body (1), and an integral structure with an L-shaped cross section is formed;

a partition structure (3) located between the first cylinder (1) and the second cylinder (2) for isolating the first chamber (101) from the second chamber (201), an

The base (7) is located at the bottom of the first cylinder (1) and the second cylinder (2) and fixedly connected with the first cylinder (1) and the second cylinder (2).

2. The steel form concrete combined L-shaped internode of claim 1, which is characterized in that: the partition structure (3) comprises a partition plate; the baffle is fixedly arranged at a 45-degree cut position where the first column body (1) and the second column body (2) are in butt joint.

3. The steel form concrete combined L-shaped internode of claim 1, which is characterized in that: the partition structure (3) comprises two partition plates and two partition plates, wherein the partition plates are arranged at the connecting positions of the first cylinder (1) and the second cylinder (2), the partition plates are perpendicular to each other and arranged at right angles, and the partition plates and the side walls of the first cylinder (1) and the second cylinder (2) are enclosed to form a third chamber (11).

4. The steel form concrete combined L-shaped interstand according to claim 2 or 3, characterized in that: the plate surface of the clapboard is provided with a communicating hole (301).

5. The steel form concrete combined L-shaped section stud according to any one of claims 1-3, characterized in that: annular rib plates (8) are respectively and fixedly arranged inside the first column body (1) and the second column body (2) along the circumferential direction of the inner wall.

6. The steel form concrete combined L-shaped section stud according to any one of claims 1-3, characterized in that: the first column body (1) and the second column body (2) are both columnar shells; the shell is made of a steel plate.

7. The steel form concrete combined L-shaped internode of claim 1, which is characterized in that: base (7) are the plate body that the upper surface was equipped with first constant head tank (701), first constant head tank (701) be the annular and with first cylinder (1) with the recess that the cross-section outline of second cylinder (2) is unanimous, first cylinder (1) with the lower extreme grafting of second cylinder (2) is fixed first constant head tank (701).

8. The steel form concrete combined L-shaped internode of claim 1, which is characterized in that: a cover plate (6) is fixedly arranged at the upper parts of the first column body (1) and the second column body (2), and the first pouring opening (4) and the second pouring opening (5) are respectively positioned on the cover plate (6); the upper surface of apron (6) is equipped with third constant head tank (602), third constant head tank (602) are the recess of annular setting.

9. The steel form concrete combined L-shaped internode of claim 8, which is characterized in that: the lower surface of apron (6) is equipped with second constant head tank (603), second constant head tank (603) be the annular and with first cylinder (1) with the recess that the cross-section outline of second cylinder (2) is unanimous, first cylinder (1) with the upper end grafting of second cylinder (2) is fixed second constant head tank (603).

10. The steel form concrete combined L-shaped internode of claim 1, which is characterized in that: the inner walls of the first cylinder (1) and the second cylinder (2) are provided with a plurality of rod bodies (9) and/or conical bulges (10) which are vertically fixed with the surface of the inner wall.

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